package com.itheima.service;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.constant.MessageConstant;
import com.itheima.dao.MemberDao;
import com.itheima.dao.OrderDao;
import com.itheima.dao.OrderSettingDao;
import com.itheima.entity.Result;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service(interfaceClass = OrderService.class)
@Transactional
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderSettingDao orderSettingDao;

    @Autowired
    private MemberDao memberDao;

    @Autowired
    private OrderDao orderDao;

    @Override
    public Result order(Map map) throws Exception {

        //1.检查当前日期是否已经预约设置,没有则无法预约
        String orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);
        OrderSetting orderSetting = orderSettingDao.findByOrderDate(date);
        if (orderSetting == null) {
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }

        //2.检查预约日期是否约满
        int number = orderSetting.getNumber();
        int reservations = orderSetting.getReservations();
        if (reservations >= number) {
            return new Result(false, MessageConstant.ORDER_FULL);
        }

        //3.检验用户是否重复预约
        String telephone = (String) map.get("telephone");
        Member member = memberDao.findByTelephone(telephone);
        if (member != null) {
            Integer memberId = member.getId();
            Integer setmealId = Integer.parseInt((String) map.get("setmealId"));
            Order order = new Order(memberId, date, null, null, setmealId);
            List<Order> orderList = orderDao.findByCondition(order);
            if (orderList != null && orderList.size() > 0) {
                //重复预约，返回预约已满
                return new Result(false, MessageConstant.HAS_ORDERED);
            }
        } else {
            //不是会员 则自动注册
            member = new Member();
            member.setPhoneNumber(telephone);
            member.setName((String) map.get("name"));
            member.setIdCard((String) map.get("idCard"));
            member.setRegTime(new Date());
            member.setSex((String) map.get("sex"));
            memberDao.add(member);
        }

        //5.预约成功
        Order order = new Order();
        order.setMemberId(member.getId());
        order.setOrderDate(date);
        order.setOrderType((String) map.get("orderType"));
        order.setOrderStatus(Order.ORDERSTATUS_NO);
        order.setSetmealId(Integer.parseInt((String) map.get("setmealId")));
        orderDao.add(order);


        //更新已预约人数
        orderSetting.setReservations(reservations + 1);
        orderSettingDao.editReservationsByOrderDate(orderSetting);

        return new Result(true, MessageConstant.ORDER_SUCCESS, order.getId());
    }

    @Override
    public Map findById(Integer id) throws Exception {

        Map map = orderDao.findById4Detail(id);
        System.out.println("map = " + map);
        if (map != null) {
            Date orderDate = (Date) map.get("orderDate");
            String date = DateUtils.parseDate2String(orderDate);
            map.put("orderDate", date);
        }
        return map;
    }
}
